AITAH for breaking up with my girlfriend without much of an explanation?

Ok so, dunno how to write this since it's my first ever post but here we go. My girlfriend, let's call her Genna, and I (both in college) were together for a little bit over 3 months, but I only count 2 of them because of some personnal problems she had that made her not able to come in school for a month, which is one of the reasons I wanted to break up. Before you say it's not cool from me I broke up with her a month after that so it was like 1 month together, her not being here the next and me breaking up a month after she got back. For some context I have a bad relationship with everything related to physical contact and/or saliva (I am extremely germaphobic, making me hate physical contact with strangers, making it hard for me to hug friends and even family and making me have dissociation/panic attacks when touched on a bad day).
Now the first month with her didn't have any problems so I'll just skip it entirely to talk about when she was away. We still kept in touch and played video games every night together while on voice chat with some friends and the first few nights were great but it started pissing me off to play with her because she can't stop complaining about everything, whenever I told her something about her gameplay (not criticizing, literally just telling her to not come close to me when she is distracting the monster because I have lower stealth than her) she would act offended and whenever we didn't do what she wanted she would be like "If I'm bothering you guys you can just tell me" and would literally leave the call to type in the game chat that she was going to cry. Not to minimize her feelings or anything but she did this so many times that at some point I started feeling that she was doing that for attention. One of our friends, that is also her ex, and even her best friend both told me that she always was like that and usually acts like a child and that it bothered them too that she was always making everything about herself and was overly sensitive (those opinions are not biased btw her ex and her are like siblings).
Now to when she got back. For that day, despite me being annoyed when she was away, I was happy that she was going to be here and decided to wear a very pretty dress and make myself look good for her to try and be a good girlfriend yk? But during the whole day she was complaining that she couldn't touch my thighs because of my dress, which made me feel like shit because I chose this outfit for her and she didn't even care about it and kept pestering me about not being able to touch me like she wanted (even my best friend made me take a few steps back and do a quick spin to show off my dress when she saw me and complimented me immediately). This, added to my horror of physical touch and me not being used anymore to her touching me almost gave me a panick attack in the morning. During lunch she wouldn't even join our group to eat and just skipped lunch altogether (not the first time she did that, it also happened on my LITERAL BIRTHDAY) and I had a sensory overload (is that how you call it?) because the food had a weird texture so I was feeling even more bad. At the end of our classes we had like one hour of free time before I had to take the bus so we could hang out together. I was sitting and she hugged me from behind, not a problem so far, but then she decided it was a good idea to just lick my neck so I shut down completely, she didn't realise this and licked my cheek a few time and then she asked me to give her a kiss and acted mad because I wasn't reacting even though she is fully aware of my sensory issues and how I act when I shut down. I was feeling so bad that I couldn't talk that much to her the next day but tried to explain myself the day after that and she wouldn't even listen to what I said and dismissed me (like wth girl?). She then stopped saying hi to me in the morning and wouldn't talk to me and only talked to people when I was not here. She even talked about her problems to carrot (my guy bestfriend that is not the same as the one that complimented my dress but he did say I was pretty) something she never did with me depsite knowing each other for well over a year before becoming a couple! She would not talk to me about her issues, would not talk to me irl and would not even try to engage in our relationship at all for like 2 weeks, and then carrot told me that she told him that she wanted to distance herself from me to become a better person?? I would like to say that at this point I didn't love her anymore but I did and that wasn't even the breaking point. At some point she started interacting with me again and it made me feel overwhelmed because all she cared about was touching me in very sensitive places DURING CLASS, not only did that made me feel bad but it was anything but considerate for my issues with physical contact, so I had enough and broke up with her by messages 2 days after. (the exact message was: "I’ve been thinking about this for a while now. And I know you’re not well right now either. But I think it would be best for us to break up. Just to leave you time to figure yourself out. And to let me actually rest and not be emotionally invested in you that much. Because I can’t handle any of the emotional backlash right now." and before you say I shouldn't have broken up with her by text we got together by text)